1)Swedish Institute of Steel Construction,瑞典钢结构学会2)American Iistitute of Steel Construction (AISC),养国钢结构学会3)American Institute of Steel Construction,美国钢结构学会4)Teaching experience of steel structure,钢结构教学体会5)trade union of Sweden,瑞典工会6)Riksdag['riksdɑ:ɡ],瑞典国会
